• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

THE RELATIONSHIP BETWEEN SPECIES DIVERSITY AND NITROGEN CYCLING IN PASTURE

Research Project

Project/Area Number 10660255
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Zootechnical science/Grassland science
Research InstitutionMiyazaki University (1999)
Tohoku University (1998)

Principal Investigator

NISHIWAKI Aya  Miyazaki University, Faculty of Agriculture, Asso. Professor, 農学部, 助教授 (60228244)

Co-Investigator(Kenkyū-buntansha) SUGAWARA Kazuo  Tohoku University, Faculty of Agriculture, Professor, 農学部, 教授 (20005672)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1999: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1998: ¥2,900,000 (Direct Cost: ¥2,900,000)
KeywordsBio-diversity / Dairy farming / Excreta / Low input / Nitrogen / Pasture / Stable isotope / Sustainable production / 草地 / 放物
Research Abstract

The study of bio-diversity is very important for not only community ecology but also applied ecology. We want to know whether degree of bio-diversity affects efficiency of nitrogen recycling in a pasture or not. Many scientists said that there are close relationship between bio-diversity and production. If there are positive relationships between bio-diversity and production then the ecosystem of high bio-diversity have high ability of maternal recycling such as nitrogen recycling.
Then we tried to the roll of bio-diversity in pasture by two aspects such as effects of management on bio-diversity, relation between bio-diversity and nitrogen recycling.
Species diversities of plant and soil tick were measured by sampling data from each pasture. Nitrogen losses were calculated by nitrogen amount in milk, fertilizer and feed grains for environmental impact. To measure the efficiency of nitrogen recovery from cattle urine to grass production we used 15N marked urine in another experiment.
The plant diversities of low-input pastures were higher than high-input pastures. There is strong relationship between plant and soil tick diversity. Results of Cost-benefit analysis for milk production per unit pasture show the presence of optimal-input for milk production. Many farmers will arrive to optimal point that means high efficiency of milk production. The nitrogen losses were decreased from over 80% to 50% during these 20 years.
There is a positive relationship between efficiency of milk production per unit pasture and bio-diversity.
We estimated the recovery % of nitrogen from cattle urine to grass growth using 15N-marker method ranged 21.6% to 39.4%.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 西脇亜也 他4名: "放牧地の草種構成と種多様性に及ぼす異なる放牧管理の影響"Grassland Science. 45. 52-58 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 西脇亜也: "草原生物群生の成立と衰退"遺伝. 53. 1-5 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 佐藤*介、西脇亜也 他2名: "搾乳牛の行動による低投入型放牧酪農の家畜福祉性評価"日本家畜管理学会誌. 34. 95-104 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Fukasaka, S. Sato, A. Nishiwaki and K. Sa**: "The influence of experienced cattle on growing behavior of calves in the novel pasture."Animal Science Journal. 70. 76-80 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 渡辺也恭、西脇亜也、菅原和夫: "放牧地で形成される裸地がミノボロスゲ(Carex albata Boott)種子の休眠状態におよぼす影響"Grassland Science. 45. 233-237 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 渡辺也恭、西脇亜也、菅原和夫: "ミノボロスゲ(Carex albata Boott)種子の休眠解除機構"Grassland Science. 45. 135-139 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Aya Nishiwaki, Shusuke Sato, Hideo Otake, Hisasi Shinohara and Kazuo Sugawara: "The comparison of pasture vegetation between two dairy farms under different grazing managements"Grassland science. 45. 52-58 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Aya Nishiwaki: "The rise and decline of grassland communities in Japan."THE IDEN-Heredity. 53. 1-5 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Shusuke Sato, Aya Nishiwaki, Hideo Otake and Hisashi Shinohara: "Animal welfare evaluation of low input dairy farming by cow's behavior"Japan. J. Livest. Management. 34. 95-104 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Michiru Fukasawa, Shusuke Sato, Aya Nishiwaki and Kazuo Sugawara: "The influence of experienced cattle on grazing behaviour of calves in the novel pasture."Animal Science Journal. 70. 74-80 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nariyasu Watanabe, Aya Nishiwaki and Kazuo Sugawara: "Effects of bare ground formed in pasture on dormancy breaking of Carex albata Boott Seeds"Grassland Science. 45. 233-237 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nariyasu Watanabe, Aya Nishiwaki and Kazuo Sugawara: "The mechanism of dormancy breaking of Carex albata Boott seeds"Grassland Science. 45. 135-139 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 西脇 亜也 他4名: "放牧地の草種構成の変化に及ぼす採食圧の影響"Grassland Science Journal. 45. 52-58 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 西脇 亜也: "草原生物群集の成立と衰退"遺伝. 53. 1-5 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 佐藤衆介,西脇亜也,大竹秀男,篠原久: "搾乳牛の行動による低投入型放牧酪農の家畜福祉性評価"日本家畜管理学会誌. 34. 95-104 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Fukasawa,S.Sato,A.Nishiwaki and K.Sugawara: "The intluence of experienced cattle on grazing heharioor of calresin the novel pasture"Animal Science. 70. 74-80 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 渡辺也恭,西脇亜也,菅原和夫: "放牧地で形成される裸地がミノボロスゲ(Carex albata Boott)種子の休眠解除に及ぼす影響"Grassland Science. 45. 233-237 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 渡辺也恭,西脇亜也,菅原和夫: "ミノボロスゲ(Carex albata Boott)種子の休眠解除機構"Grassland Science. 45. 135-139 (1999)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1998-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi